While you wait for answers, we may have found some information which could help you.
Click here for Lawn Mower Carburetor Briggs & Stratton
lawn mower briggs and stratton classic 35?
my briggs and stratton 3.5hp starts up then cuts out straight away?
Excessive Compression?
Briggs and Stratton SP470?
Petrol or diesel?
what causes my Briggs and Statton petrol mower to hunt ?